Sound Calibrator 4010
The 4010 is a sound calibrator conforming to IEC 60942 class 1 and ANSI S1.40 for the calibration and the verification of microphones and sound level meters.
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The combination of two sound pressure levels and two frequencies allow both level linearity and frequency linearity to be verified. Each sound calibrator is supplied with an individual calibration certificate.
The reference microphone and control circuit together maintain a constant sound pressure level inside the calibration coupler and automatically adjust for changes in load volume, temperature, atmospheric pressure and relative humidity. In addition the sound calibrator measures the environmental conditions temperature, atmospheric pressure and relative humidity.
| Temperature measurement | Range | -10 °C to +50 °C |
| Accuracy | ±2 °C | |
| Resolution | 0.1 °C | |
| Atmospheric pressure measurement | Range | 65 kPa to 108 kPa |
| Accuracy | ±0.4 kPa | |
| Resolution | 0.1 kPa | |
| Relative humidity measurement | Range | 25% to 90% |
| Accuracy | ±4% | |
| Resolution | 1% | |
| Levels at reference conditions | (94.0 ± 0.2)dB | |
| Levels at reference conditions | (114.0 ± 0.2)dB | |
| frequency at reference conditions | 250 Hz (251.19 ± 0.30Hz) | |
| frequency at reference conditions | 1000 Hz (1000.00 ± 1.00Hz) | |
| Distortion | max. 2.0% | |
| Stabilizing time | 20 seconds | |
| Sensitivity to environmental conditions | as specified for IEC 60942 Class 1 | |
| Microphone size | without adapter | (1/1)“ |
| with adapter 4010-2 | (1/2)“ | |
| with adapter 4010-3 | (1/4)“ | |
| Battery type | 2x LR03 alkaline batteries | |
| Battery size | AAA-size acc. ANSI/NEDA | |
| Battery life | >10 hours | |
| Power supply | 2 V to 3.4 V | |
| Display | Typ | Mono-colour OLED graphical display |
| Resolution | 128 x 64 (W x H) | |
| LED indicator | two-colour LED | |
| Main value of sound pressure level IEC 60942, 6.3e | 114.0 dB | |
| Main value of frequency IEC 60942, 6.3f | 250 Hz | |
| Ambient conditions – temperature | operating range | -10 °C to +50 °C |
| Ambient conditions – humidity, non condensing | operating range | 25% to 90% |
| Ambient conditions – atmospheric pressure | operating range | 65 kPa to 108 kPa |
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